Geologic Time and Major Events

The video tutorial explores the concept of timelines using Ben Franklin's life and Earth's history. It introduces the geologic time scale, highlighting major events like the extinction of dinosaurs and the Cambrian explosion. The tutorial explains changes in Earth's atmosphere over time and divides geologic time into eras, periods, and epochs, emphasizing the importance of these divisions in understanding Earth's history.

What major event in Ben Franklin's life is highlighted as a significant point on his timeline?

• His famous kite experiment

• His birth

• His move to London

• His death

What is a key factor in dividing Earth's geologic time?

• The extinction of species

• The change in sea levels

• The formation of mountains

• The movement of tectonic plates

Approximately what percentage of geologic time have humans existed on Earth?

• 10%

• 0.1%

• 5%

• 1%

What process contributed to the high levels of carbon dioxide in Earth's early atmosphere?

• Meteor impacts

• Outgassing from volcanoes

• Photosynthesis

• Ocean evaporation

When did the dinosaurs become extinct?

• 500 million years ago

• 65 million years ago

• 200 million years ago

• 100 million years ago

What major event marks the beginning of the Phanerozoic eon?

• The Cambrian explosion

• The formation of the Earth

• The extinction of dinosaurs

• The appearance of humans

What does the term 'Paleozoic' mean?

• Ancient life

• Middle life

• Recent life

• Simple life

Which era is known as the 'age of the dinosaurs'?

• Mesozoic

• Precambrian

• Paleozoic

• Cenozoic

Into what smaller units can eras be divided?

• Decades

• Millennia

• Centuries

• Epochs

Which period is part of the Paleozoic era?

• Tertiary

• Cambrian

• Cretaceous

• Jurassic